One luxury resale stock is quietly delivering its strongest growth in years — despite insiders taking some profits.Connecticut-based Manatuck Hill Partners disclosed a sale of 150,000 shares of The RealReal (REAL 1.62%) in a November 14 SEC filing, though rising shares of the stock helped the overall value of the stake increase by $5.8 million.What HappenedAccording to its SEC filing dated November 14, Manatuck Hill Partners sold 350,000 shares of The RealReal (REAL 1.62%) in the third quarter. However, giv ...